I wonder if this means they solved the 200 item limit for the Steam community market because they limited it because the IRS requires Valve to notify them of anyone who trades 200+ items with a total value of more than $20.000 in value.

It would require the personal info of the people involved in trading.

As far as I know that part hasn't been resolved yet, and this system would fall under the same rules probably (if the community market does at least then I imagine this one will as well)